fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / sunrpc / cache.h

diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index b5612c9..3699dff 100644 (file)
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -163,6 +163,17 @@ static inline void cache_put(struct cache_head *h, struct cache_detail *cd)
        kref_put(&h->ref, cd->cache_put);
 }
 
+static inline int cache_valid(struct cache_head *h)
+{
+       /* If an item has been unhashed pending removal when
+        * the refcount drops to 0, the expiry_time will be
+        * set to 0.  We don't want to consider such items
+        * valid in this context even though CACHE_VALID is
+        * set.
+        */
+       return (h->expiry_time != 0 && test_bit(CACHE_VALID, &h->flags));
+}
+
 extern int cache_check(struct cache_detail *detail,
                       struct cache_head *h, struct cache_req *rqstp);
 extern void cache_flush(void);